ABB 615 Series - Technical Revision History

4.5.1.11 Technical revision history
Table 520: 59 Technical revision history
Technical revision
Change
B Step value changed from 0.05 to 0.01 for the Time
multiplier setting.
C Curve Sat relative max range widened from 3.0 to
10.0 % and default value changed from 2.0 to 0.0 %.
D Added setting Type of time reset .
4.5.2 Three-phase undervoltage protection 27
4.5.2.1 Identification
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Three-phase undervoltage protection PHPTUV 3U< 27
4.5.2.2 Function block
GUID-B4A78A17-67CA-497C-B2F1-BC4F1DA415B6-ANSI V1 EN
Figure 310: Function block
4.5.2.3 Functionality
The three-phase undervoltage protection function 27 is used to disconnect from the
network devices, for example electric motors, which are damaged when subjected to
service under low voltage conditions. 27 includes a settable value for the detection of
undervoltage either in a single phase, two phases or three phases.
The function contains a blocking functionality. It is possible to block function outputs,
timer or the function itself, if desired.
4.5.2.4 Operation principle
The function can be enabled and disabled with the Operation setting. The corresponding
parameter values are “Enable” and “Disable”.
Section 4 1MAC059074-MB A
Protection functions
618 615 series ANSI
Technical Manual